.
It is a hyperbola with y-axis as a real axis.
The center is at (0,0), the origin of the coordinate plane.
The vertices are the points of the curve lying at y-axis x= 0.
So, substitute x= 0 into the equation and get 4y^2 = 144,
which implies y^2 =
= 36, y = +/-
= +/-6.
So the vertices are (0,6) and (0,-6).
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See the lesson
- Hyperbola definition, canonical equation, characteristic points and elements
in this site.